And more than 150 CRB1 mutations are shown to be associated with specific fundus features other than RP or LCA, such as preserved para-arteriole retinal pigment epithelium (PPRPE) and retinal telangiectasia with exudation (Coats-like exudative vasculopathy) [52, 53]. Here, CRB1 is linked to retinitis pigmentosa 1.